Simmonds gave the Flyers a 1-0 lead with a power-play goal at 6:09, and Voracek made it 2-0 at 9:45. The Flyers allowed one shot on goal the rest of the game.
"It kind of reminded me the way we were playing with that 10-game winning streak," Voracek said. "We were confident that we were going to find a way to win the game, and we did."
Mason made 16 saves in the first period, including on Rick Nash's one-timer from the right circle off the rush.
"It is a big save to make, something that gives you confidence," Mason said. "Obviously coming here into MSG, it's not an easy building to come away with two points in, so to preserve a 0-0 tie there was a big save and it's something the team could respond to as well."
Mason denied Michael Grabner, who was alone in the slot, with a right-pad save at 18:47 of the first period. He then stopped Grabner on the rebound.
"I was feeling good from the opening puck drop," Mason said. "Over the course of 60 minutes there are moments that can alter the outcome of games. It's a goaltender's job to come up with big saves."
Grabner hit the crossbar on a breakaway at 7:25 of the first period, inadvertently set up Simmonds for his goal, and Voracek's goal went in off of his leg.